Support silx mask from silx 0.14

We have recently noticed that the mask created from silx can't be used in Lima without been inverted.

The convensions are not the same.

• Lima -> Mask = 0 -> Set data to 0
• Silx -> Mask != 0 -> Set data to 0

In the next next coming silx version 0.14, a tag was added to the mask file in order to know the application where the EDF comes from. See https://github.com/silx-kit/silx/pull/3310 In this case the EDF mask header will contain header["program_name"] == "silx-mask".

As result we are able to properly read the mask convention.

This PR

• Fix the EDF header propagation when using Utils.getDataFromFile.
  • Previously errors was inhibited, and the header setter was just not working.
• Create a getMaskDataFromFile
• Read the EDF header to check existance of masked_value, and according to the following values, patch the mask data
  • zero: Mask the data when the mask value is 0 (default Lima convention)
  • nonzero: Mask the data when the mask value is something else than 0 (default silx convention)

See also https://github.com/silx-kit/silx/issues/3217

I expect this PR to provide a better integration of silx view, Flint and then BLISS with Lima. See bliss/bliss!2987.